| 引用本文: | 蒋培,张春华,陈循,等.超高斯随机振动环境的疲劳强化机理.[J].国防科技大学学报,2004,26(3):99-102.[点击复制] |
| JIANG Pei,ZHANG Chunhua,CHEN Xun,et al.Fatigue Enhancement Mechanism of the Super-Gaussian Random Vibration Environment[J].Journal of National University of Defense Technology,2004,26(3):99-102[点击复制] |
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| 超高斯随机振动环境的疲劳强化机理 |
| 蒋培, 张春华, 陈循, 温熙森 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 针对可靠性强化试验的全轴随机振动环境的超高斯幅值分布特性开展其疲劳强化机理研究。首先通过理论分析表明RS机振动激励下试件应力仍保持超高斯分布，然后证明了同等量级下的超高斯分布比高斯分布随机应力具有更高的疲劳强化效能，从而揭示RS机全轴随机振动环境超高斯幅值分布特性的疲劳强化机理。 |
| 关键词: 可靠性强化试验 疲劳损伤 随机应力 功率谱 |
| DOI： |
| 投稿日期：2003-12-16 |
| 基金项目:国家部委重点资助项目 |
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| Fatigue Enhancement Mechanism of the Super-Gaussian Random Vibration Environment |
| JIANG Pei, ZHANG Chunhua, CHEN Xun, WEN Xisen |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073,China)
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| Abstract: |
| This paper studies the fatigue enhancement mechanism of the super-Gaussian amplitude distributioncharacteristic. At first it is demonstrated that the responsestressesamplitudedistribution is super-Gaussian in the repetitiveshockmachine. Then it isproved that the super-Gaussianrandom stressed have higher efficiency to stimulate fatigue failure than Gaussian random stresses of the equivalent lever. Finally the fatigue enhancement mechanism of super-Gaussianamplitude distribution characteristic is illustrated. |
| Keywords: reliability enhancement testing fatigue damage random stresses power spectral density |
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